monisuo/flutter_monisuo/lib/ui/pages/asset/transfer_page.dart

import 'dart:async';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:provider/provider.dart';
import 'package:lucide_icons_flutter/lucide_icons.dart';
import '../../../core/theme/app_theme.dart';
import '../../../core/theme/app_theme_extension.dart';
import '../../../core/theme/app_spacing.dart';
import '../../../providers/asset_provider.dart';
import '../../../data/models/account_models.dart';

/// 劃轉頁面 - 現代化設計版本
class TransferPage extends StatefulWidget {
  const TransferPage({super.key});

  @override
  State<TransferPage> createState() => _TransferPageState();
}

class _TransferPageState extends State<TransferPage>
    with TickerProviderStateMixin {
  final _amountController = TextEditingController();
  final _focusNode = FocusNode();
  int _direction = 1; // 1: 資金→交易, 2: 交易→資金
  bool _isLoading = false;

  // Animation controllers
  late AnimationController _swapAnimationController;
  late AnimationController _amountAnimationController;
  late AnimationController _balanceAnimationController;
  late Animation<double> _swapAnimation;
  late Animation<double> _amountScaleAnimation;

  // Balance animation values
  String _displayedFromBalance = '0.00';
  String _displayedToBalance = '0.00';
  String _targetFromBalance = '0.00';
  String _targetToBalance = '0.00';

  @override
  void initState() {
    super.initState();

    // Initialize swap animation
    _swapAnimationController = AnimationController(
      duration: const Duration(milliseconds: 600),
      vsync: this,
    );
    _swapAnimation = CurvedAnimation(
      parent: _swapAnimationController,
      curve: Curves.easeInOutCubic,
    );

    // Initialize amount scale animation
    _amountAnimationController = AnimationController(
      duration: const Duration(milliseconds: 200),
      vsync: this,
    );
    _amountScaleAnimation = Tween<double>(begin: 1.0, end: 1.05).animate(
      CurvedAnimation(
        parent: _amountAnimationController,
        curve: Curves.easeInOut,
      ),
    );

    // Initialize balance animation
    _balanceAnimationController = AnimationController(
      duration: const Duration(milliseconds: 500),
      vsync: this,
    )..addListener(_updateBalanceAnimation);

    _amountController.addListener(_onAmountChanged);

    WidgetsBinding.instance.addPostFrameCallback((_) {
      context.read<AssetProvider>().refreshAll(force: true);
      _updateBalanceTargets();
    });
  }

  @override
  void dispose() {
    _amountController.removeListener(_onAmountChanged);
    _amountController.dispose();
    _focusNode.dispose();
    _swapAnimationController.dispose();
    _amountAnimationController.dispose();
    _balanceAnimationController.removeListener(_updateBalanceAnimation);
    _balanceAnimationController.dispose();
    super.dispose();
  }

  void _onAmountChanged() {
    // Trigger amount input animation
    _amountAnimationController.forward().then((_) {
      _amountAnimationController.reverse();
    });
  }

  void _updateBalanceTargets() {
    setState(() {
      _targetFromBalance = _fromBalance;
      _targetToBalance = _toBalance;
      _displayedFromBalance = _targetFromBalance;
      _displayedToBalance = _targetToBalance;
    });
  }

  void _updateBalanceAnimation() {
    // This will be used for smooth balance transitions
  }

  // ============================================
  // 數據訪問
  // ============================================

  String get _fundBalance {
    try {
      final provider = context.read<AssetProvider>();
      final balance = provider.fundAccount?.balance ?? provider.overview?.fundBalance ?? '0.00';
      return _formatBalance(balance);
    } catch (e) {
      return '0.00';
    }
  }

  String get _tradeUsdtBalance {
    try {
      final provider = context.read<AssetProvider>();
      if (provider.tradeAccounts.isEmpty) {
        return '0.00';
      }
      final usdtHolding = provider.tradeAccounts.firstWhere(
        (t) => t.coinCode.toUpperCase() == 'USDT',
        orElse: () => AccountTrade(
          id: 0,
          userId: 0,
          coinCode: 'USDT',
          quantity: '0',
          avgPrice: '1',
          totalCost: '0',
          currentValue: '0',
          profit: '0',
          profitRate: 0,
        ),
      );
      return _formatBalance(usdtHolding.quantity);
    } catch (e) {
      return '0.00';
    }
  }

  String get _availableBalance => _direction == 1 ? _fundBalance : _tradeUsdtBalance;

  String get _fromLabel => _direction == 1 ? '資金賬戶' : '交易賬戶';
  String get _toLabel => _direction == 1 ? '交易賬戶' : '資金賬戶';
  String get _fromBalance => _direction == 1 ? _fundBalance : _tradeUsdtBalance;
  String get _toBalance => _direction == 1 ? _tradeUsdtBalance : _fundBalance;

  IconData get _fromIcon => _direction == 1 ? LucideIcons.wallet : LucideIcons.trendingUp;
  IconData get _toIcon => _direction == 1 ? LucideIcons.trendingUp : LucideIcons.wallet;

  // ============================================
  // 業務邏輯
  // ============================================

  Future<void> _doTransfer() async {
    final amount = _amountController.text;
    final available = double.tryParse(_availableBalance) ?? 0;
    final transferAmount = double.tryParse(amount) ?? 0;

    if (transferAmount <= 0) {
      _showSnackBar('請輸入有效的劃轉金額');
      return;
    }

    if (transferAmount > available) {
      _showSnackBar('餘額不足');
      return;
    }

    setState(() => _isLoading = true);

    try {
      final response = await context.read<AssetProvider>().transfer(
        direction: _direction,
        amount: amount,
      );

      if (mounted) {
        if (response.success) {
          _amountController.clear();
          _showSnackBar('劃轉成功');
          await Future.delayed(const Duration(milliseconds: 500));
          if (mounted) {
            Navigator.of(context).pop(true);
          }
        } else {
          _showSnackBar(response.message ?? '劃轉失敗');
        }
      }
    } finally {
      if (mounted) {
        setState(() => _isLoading = false);
      }
    }
  }

  void _showSnackBar(String message) {
    ScaffoldMessenger.of(context).showSnackBar(
      SnackBar(
        content: Text(message),
        behavior: SnackBarBehavior.floating,
        shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(12)),
      ),
    );
  }

  void _setQuickAmount(double percent) {
    final available = double.tryParse(_availableBalance) ?? 0;
    final amount = available * percent;
    _amountController.text = amount.toStringAsFixed(8).replaceAll(RegExp(r'\.?0+$'), '');
    
    // Trigger haptic feedback
    HapticFeedback.selectionClick();
  }

  Future<void> _toggleDirection() async {
    // Trigger haptic feedback
    HapticFeedback.mediumImpact();
    
    await _swapAnimationController.forward();
    setState(() {
      _direction = _direction == 1 ? 2 : 1;
      _updateBalanceTargets();
    });
    _swapAnimationController.reset();
  }

  // ============================================
  // 構建 UI
  // ============================================

  @override
  Widget build(BuildContext context) {
    final colorScheme = Theme.of(context).colorScheme;

    return Scaffold(
      backgroundColor: colorScheme.surface,
      appBar: AppBar(
        backgroundColor: Colors.transparent,
        elevation: 0,
        scrolledUnderElevation: 0,
        leading: IconButton(
          icon: Container(
            padding: const EdgeInsets.all(8),
            decoration: BoxDecoration(
              color: colorScheme.surfaceContainerHighest.withValues(alpha: 0.5),
              borderRadius: BorderRadius.circular(12),
            ),
            child: Icon(LucideIcons.arrowLeft, color: colorScheme.onSurface, size: 20),
          ),
          onPressed: () => Navigator.of(context).pop(),
        ),
        title: Text(
          '賬戶劃轉',
          style: AppTextStyles.headlineLarge(context).copyWith(
            fontWeight: FontWeight.w700,
          ),
        ),
        centerTitle: true,
      ),
      body: Consumer<AssetProvider>(
        builder: (context, provider, _) {
          return Container(
            decoration: BoxDecoration(
              gradient: LinearGradient(
                begin: Alignment.topCenter,
                end: Alignment.bottomCenter,
                colors: [
                  colorScheme.surface,
                  colorScheme.surfaceContainerLowest.withValues(alpha: 0.3),
                ],
              ),
            ),
            child: SingleChildScrollView(
              padding: const EdgeInsets.fromLTRB(AppSpacing.lg, AppSpacing.sm, AppSpacing.lg, AppSpacing.xl),
              child: Column(
                children: [
                  _buildTransferDirectionCard(),
                  const SizedBox(height: AppSpacing.xl),
                  _buildAmountSection(),
                  const SizedBox(height: AppSpacing.xl),
                  _buildTipsCard(),
                  const SizedBox(height: AppSpacing.xl + AppSpacing.sm),
                  _buildConfirmButton(),
                  const SizedBox(height: AppSpacing.lg),
                ],
              ),
            ),
          );
        },
      ),
    );
  }

  // ============================================
  // Transfer direction card - Modern Design
  // ============================================

  Widget _buildTransferDirectionCard() {
    final colorScheme = Theme.of(context).colorScheme;
    final isDark = colorScheme.brightness == Brightness.dark;
    
    // Gold gradient colors
    final goldStart = isDark ? const Color(0xFFD4AF37) : const Color(0xFFF59E0B);
    final goldEnd = isDark ? const Color(0xFFFFD700) : const Color(0xFFFFA500);

    return Container(
      width: double.infinity,
      padding: const EdgeInsets.all(AppSpacing.lg),
      decoration: BoxDecoration(
        gradient: LinearGradient(
          begin: Alignment.topLeft,
          end: Alignment.bottomRight,
          colors: isDark
              ? [
                  colorScheme.surfaceContainerHigh,
                  colorScheme.surfaceContainer,
                ]
              : [
                  Colors.white,
                  colorScheme.surfaceContainerLow,
                ],
        ),
        borderRadius: BorderRadius.circular(24),
        boxShadow: [
          BoxShadow(
            color: colorScheme.shadow.withValues(alpha: isDark ? 0.3 : 0.08),
            blurRadius: 24,
            offset: const Offset(0, 8),
          ),
          BoxShadow(
            color: goldStart.withValues(alpha: 0.1),
            blurRadius: 16,
            offset: const Offset(0, 4),
            spreadRadius: 2,
          ),
        ],
        border: Border.all(
          color: colorScheme.outlineVariant.withValues(alpha: 0.3),
          width: 1,
        ),
      ),
      child: Column(
        children: [
          // From Account Card
          _AnimatedAccountCard(
            key: ValueKey('from-$_direction'),
            label: '從',
            accountName: _fromLabel,
            balance: _displayedFromBalance,
            icon: _fromIcon,
            isSource: true,
            animation: _swapAnimation,
          ),

          // Swap Button - Enhanced Design
          Padding(
            padding: const EdgeInsets.symmetric(vertical: AppSpacing.md),
            child: GestureDetector(
              onTap: _toggleDirection,
              child: Container(
                width: 56,
                height: 56,
                decoration: BoxDecoration(
                  gradient: LinearGradient(
                    begin: Alignment.topLeft,
                    end: Alignment.bottomRight,
                    colors: [goldStart, goldEnd],
                  ),
                  shape: BoxShape.circle,
                  boxShadow: [
                    BoxShadow(
                      color: goldStart.withValues(alpha: 0.4),
                      blurRadius: 16,
                      offset: const Offset(0, 4),
                    ),
                    BoxShadow(
                      color: goldStart.withValues(alpha: 0.2),
                      blurRadius: 8,
                      offset: const Offset(0, 2),
                    ),
                  ],
                ),
                child: Container(
                  margin: const EdgeInsets.all(2),
                  decoration: BoxDecoration(
                    color: colorScheme.surface,
                    shape: BoxShape.circle,
                  ),
                  child: Container(
                    margin: const EdgeInsets.all(2),
                    decoration: BoxDecoration(
                      gradient: LinearGradient(
                        begin: Alignment.topLeft,
                        end: Alignment.bottomRight,
                        colors: [goldStart, goldEnd],
                      ),
                      shape: BoxShape.circle,
                    ),
                    child: Icon(
                      LucideIcons.arrowUpDown,
                      size: 24,
                      color: colorScheme.surface,
                    ),
                  ),
                ),
              ),
            ),
          ),

          // To Account Card
          _AnimatedAccountCard(
            key: ValueKey('to-$_direction'),
            label: '到',
            accountName: _toLabel,
            balance: _displayedToBalance,
            icon: _toIcon,
            isSource: false,
            animation: _swapAnimation,
          ),
        ],
      ),
    );
  }

  // ============================================
  // Amount input section - Enhanced Design
  // ============================================

  Widget _buildAmountSection() {
    final colorScheme = Theme.of(context).colorScheme;
    final isDark = colorScheme.brightness == Brightness.dark;

    return Column(
      crossAxisAlignment: CrossAxisAlignment.start,
      children: [
        // Header with label and max button
        Row(
          mainAxisAlignment: MainAxisAlignment.spaceBetween,
          children: [
            Row(
              children: [
                Icon(
                  LucideIcons.coins,
                  size: 20,
                  color: colorScheme.onSurfaceVariant,
                ),
                const SizedBox(width: 8),
                Text(
                  '劃轉金額',
                  style: AppTextStyles.headlineSmall(context).copyWith(
                    color: colorScheme.onSurface,
                    fontWeight: FontWeight.w600,
                  ),
                ),
              ],
            ),
            Material(
              color: Colors.transparent,
              child: InkWell(
                onTap: () => _setQuickAmount(1.0),
                borderRadius: BorderRadius.circular(16),
                child: Container(
                  padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 6),
                  decoration: BoxDecoration(
                    gradient: LinearGradient(
                      colors: [
                        colorScheme.secondary.withValues(alpha: 0.15),
                        colorScheme.secondary.withValues(alpha: 0.05),
                      ],
                    ),
                    borderRadius: BorderRadius.circular(16),
                    border: Border.all(
                      color: colorScheme.secondary.withValues(alpha: 0.3),
                      width: 1,
                    ),
                  ),
                  child: Text(
                    '全部',
                    style: AppTextStyles.labelLarge(context).copyWith(
                      color: colorScheme.secondary,
                      fontWeight: FontWeight.w600,
                    ),
                  ),
                ),
              ),
            ),
          ],
        ),
        const SizedBox(height: 16),

        // Amount input card with glow effect
        AnimatedBuilder(
          animation: _amountScaleAnimation,
          builder: (context, child) {
            return Transform.scale(
              scale: _amountScaleAnimation.value,
              child: Container(
                decoration: BoxDecoration(
                  borderRadius: BorderRadius.circular(20),
                  boxShadow: _focusNode.hasFocus
                      ? [
                          BoxShadow(
                            color: colorScheme.secondary.withValues(alpha: 0.2),
                            blurRadius: 16,
                            spreadRadius: 2,
                          ),
                        ]
                      : [],
                ),
                child: Container(
                  width: double.infinity,
                  height: 80,
                  padding: const EdgeInsets.symmetric(horizontal: AppSpacing.lg, vertical: AppSpacing.md),
                  decoration: BoxDecoration(
                    gradient: LinearGradient(
                      begin: Alignment.topLeft,
                      end: Alignment.bottomRight,
                      colors: isDark
                          ? [
                              colorScheme.surfaceContainerHighest,
                              colorScheme.surfaceContainerHigh,
                            ]
                          : [
                              Colors.white,
                              colorScheme.surfaceContainerLow,
                            ],
                    ),
                    borderRadius: BorderRadius.circular(20),
                    border: Border.all(
                      color: _focusNode.hasFocus
                          ? colorScheme.secondary
                          : colorScheme.outlineVariant.withValues(alpha: 0.5),
                      width: _focusNode.hasFocus ? 2 : 1,
                    ),
                    boxShadow: [
                      BoxShadow(
                        color: colorScheme.shadow.withValues(alpha: isDark ? 0.2 : 0.05),
                        blurRadius: 12,
                        offset: const Offset(0, 4),
                      ),
                    ],
                  ),
                  child: Row(
                    children: [
                      Expanded(
                        child: TextField(
                          controller: _amountController,
                          focusNode: _focusNode,
                          keyboardType: const TextInputType.numberWithOptions(decimal: true),
                          inputFormatters: [
                            FilteringTextInputFormatter.allow(RegExp(r'^\d*\.?\d{0,8}')),
                          ],
                          style: TextStyle(
                            fontSize: 36,
                            fontWeight: FontWeight.w700,
                            color: colorScheme.onSurface,
                            letterSpacing: -0.5,
                          ),
                          decoration: InputDecoration(
                            hintText: '0.00',
                            hintStyle: TextStyle(
                              fontSize: 36,
                              fontWeight: FontWeight.w700,
                              color: colorScheme.onSurfaceVariant.withValues(alpha: 0.3),
                              letterSpacing: -0.5,
                            ),
                            border: InputBorder.none,
                            contentPadding: EdgeInsets.zero,
                            isDense: true,
                          ),
                        ),
                      ),
                      Container(
                        padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 6),
                        decoration: BoxDecoration(
                          color: colorScheme.surfaceContainerHighest.withValues(alpha: 0.5),
                          borderRadius: BorderRadius.circular(12),
                        ),
                        child: Text(
                          'USDT',
                          style: AppTextStyles.headlineSmall(context).copyWith(
                            fontWeight: FontWeight.w600,
                            color: colorScheme.onSurfaceVariant,
                          ),
                        ),
                      ),
                    ],
                  ),
                ),
              ),
            );
          },
        ),
        const SizedBox(height: 16),

        // Available balance display
        Container(
          padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 10),
          decoration: BoxDecoration(
            color: colorScheme.surfaceContainerHighest.withValues(alpha: 0.3),
            borderRadius: BorderRadius.circular(12),
          ),
          child: Row(
            mainAxisAlignment: MainAxisAlignment.spaceBetween,
            children: [
              Text(
                '可用餘額',
                style: AppTextStyles.bodyMedium(context).copyWith(
                  color: colorScheme.onSurfaceVariant,
                ),
              ),
              Text(
                '${_formatBalance(_availableBalance)} USDT',
                style: AppTextStyles.bodyLarge(context).copyWith(
                  fontWeight: FontWeight.w600,
                  color: colorScheme.onSurface,
                ),
              ),
            ],
          ),
        ),
        const SizedBox(height: 20),

        // Percent buttons - Capsule design with gradient
        Row(
          children: [
            _buildPercentButton('25%', 0.25, 0),
            const SizedBox(width: 8),
            _buildPercentButton('50%', 0.50, 1),
            const SizedBox(width: 8),
            _buildPercentButton('75%', 0.75, 2),
            const SizedBox(width: 8),
            _buildPercentButton('100%', 1.0, 3),
          ],
        ),
      ],
    );
  }

  Widget _buildPercentButton(String label, double percent, int index) {
    final colorScheme = Theme.of(context).colorScheme;
    final isDark = colorScheme.brightness == Brightness.dark;
    final goldStart = isDark ? const Color(0xFFD4AF37) : const Color(0xFFF59E0B);
    final goldEnd = isDark ? const Color(0xFFFFD700) : const Color(0xFFFFA500);

    return Expanded(
      child: Material(
        color: Colors.transparent,
        child: InkWell(
          onTap: () => _setQuickAmount(percent),
          borderRadius: BorderRadius.circular(20),
          child: Container(
            height: 44,
            decoration: BoxDecoration(
              gradient: LinearGradient(
                begin: Alignment.topLeft,
                end: Alignment.bottomRight,
                colors: [
                  goldStart.withValues(alpha: 0.12),
                  goldEnd.withValues(alpha: 0.08),
                ],
              ),
              borderRadius: BorderRadius.circular(20),
              border: Border.all(
                color: goldStart.withValues(alpha: 0.25),
                width: 1.5,
              ),
            ),
            child: Center(
              child: Text(
                label,
                style: TextStyle(
                  fontSize: 15,
                  fontWeight: FontWeight.w600,
                  color: goldStart,
                ),
              ),
            ),
          ),
        ),
      ),
    );
  }

  // ============================================
  // Tips card - Refined Design
  // ============================================

  Widget _buildTipsCard() {
    final colorScheme = Theme.of(context).colorScheme;
    final isDark = colorScheme.brightness == Brightness.dark;
    final successColor = isDark ? const Color(0xFF4ADE80) : const Color(0xFF10B981);

    return Container(
      width: double.infinity,
      padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 14),
      decoration: BoxDecoration(
        gradient: LinearGradient(
          colors: [
            successColor.withValues(alpha: 0.08),
            successColor.withValues(alpha: 0.03),
          ],
        ),
        borderRadius: BorderRadius.circular(16),
        border: Border.all(
          color: successColor.withValues(alpha: 0.2),
          width: 1,
        ),
      ),
      child: Row(
        children: [
          Container(
            padding: const EdgeInsets.all(6),
            decoration: BoxDecoration(
              color: successColor.withValues(alpha: 0.15),
              borderRadius: BorderRadius.circular(8),
            ),
            child: Icon(
              LucideIcons.sparkles,
              size: 18,
              color: successColor,
            ),
          ),
          const SizedBox(width: 12),
          Expanded(
            child: Column(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: [
                Text(
                  '即時到賬',
                  style: AppTextStyles.bodyMedium(context).copyWith(
                    color: successColor,
                    fontWeight: FontWeight.w600,
                  ),
                ),
                const SizedBox(height: 2),
                Text(
                  '劃轉即時到賬，無需手續費',
                  style: AppTextStyles.bodySmall(context).copyWith(
                    color: successColor.withValues(alpha: 0.8),
                  ),
                ),
              ],
            ),
          ),
        ],
      ),
    );
  }

  // ============================================
  // Confirm button - Premium Design
  // ============================================

  Widget _buildConfirmButton() {
    final colorScheme = Theme.of(context).colorScheme;
    final isDark = colorScheme.brightness == Brightness.dark;
    final goldStart = isDark ? const Color(0xFFD4AF37) : const Color(0xFFF59E0B);
    final goldEnd = isDark ? const Color(0xFFFFD700) : const Color(0xFFFFA500);
    final hasAmount = _amountController.text.isNotEmpty && double.tryParse(_amountController.text) != null && double.parse(_amountController.text) > 0;

    return Container(
      height: 60,
      decoration: BoxDecoration(
        gradient: hasAmount && !_isLoading
            ? LinearGradient(
                begin: Alignment.topLeft,
                end: Alignment.bottomRight,
                colors: [goldStart, goldEnd],
              )
            : null,
        color: hasAmount && !_isLoading ? null : colorScheme.surfaceContainerHighest,
        borderRadius: BorderRadius.circular(20),
        boxShadow: hasAmount && !_isLoading
            ? [
                BoxShadow(
                  color: goldStart.withValues(alpha: 0.4),
                  blurRadius: 20,
                  offset: const Offset(0, 8),
                ),
                BoxShadow(
                  color: goldStart.withValues(alpha: 0.2),
                  blurRadius: 8,
                  offset: const Offset(0, 4),
                ),
              ]
            : [
                BoxShadow(
                  color: colorScheme.shadow.withValues(alpha: 0.08),
                  blurRadius: 12,
                  offset: const Offset(0, 4),
                ),
              ],
      ),
      child: Material(
        color: Colors.transparent,
        child: InkWell(
          onTap: _isLoading ? null : _doTransfer,
          borderRadius: BorderRadius.circular(20),
          child: Center(
            child: _isLoading
                ? SizedBox(
                    width: 24,
                    height: 24,
                    child: CircularProgressIndicator(
                      strokeWidth: 2.5,
                      valueColor: AlwaysStoppedAnimation<Color>(
                        isDark ? Colors.white : colorScheme.onSurface,
                      ),
                    ),
                  )
                : Row(
                    mainAxisAlignment: MainAxisAlignment.center,
                    children: [
                      Icon(
                        LucideIcons.arrowRight,
                        size: 22,
                        color: hasAmount ? Colors.white : colorScheme.onSurfaceVariant,
                      ),
                      const SizedBox(width: 8),
                      Text(
                        '確認劃轉',
                        style: TextStyle(
                          color: hasAmount ? Colors.white : colorScheme.onSurfaceVariant,
                          fontSize: 18,
                          fontWeight: FontWeight.w700,
                          letterSpacing: 0.5,
                        ),
                      ),
                    ],
                  ),
          ),
        ),
      ),
    );
  }

  // ============================================
  // Helpers
  // ============================================

  String _formatBalance(String balance) {
    final val = double.tryParse(balance);
    if (val == null) return '0.00';
    return val.toStringAsFixed(2);
  }
}

// ============================================
// Animated Account Card Widget
// ============================================

class _AnimatedAccountCard extends StatelessWidget {
  final String label;
  final String accountName;
  final String balance;
  final IconData icon;
  final bool isSource;
  final Animation<double> animation;

  const _AnimatedAccountCard({
    super.key,
    required this.label,
    required this.accountName,
    required this.balance,
    required this.icon,
    required this.isSource,
    required this.animation,
  });

  @override
  Widget build(BuildContext context) {
    final colorScheme = Theme.of(context).colorScheme;
    final isDark = colorScheme.brightness == Brightness.dark;
    final goldColor = isDark ? const Color(0xFFD4AF37) : const Color(0xFFF59E0B);

    return AnimatedBuilder(
      animation: animation,
      builder: (context, child) {
        return Transform.translate(
          offset: Offset(0, animation.value * (isSource ? -10 : 10)),
          child: Opacity(
            opacity: 1.0 - (animation.value * 0.3),
            child: child,
          ),
        );
      },
      child: Container(
        width: double.infinity,
        padding: const EdgeInsets.all(AppSpacing.md),
        decoration: BoxDecoration(
          color: isDark
              ? colorScheme.surfaceContainer.withValues(alpha: 0.5)
              : colorScheme.surface.withValues(alpha: 0.8),
          borderRadius: BorderRadius.circular(16),
          border: Border.all(
            color: colorScheme.outlineVariant.withValues(alpha: 0.2),
            width: 1,
          ),
        ),
        child: Row(
          children: [
            // Icon container with gradient
            Container(
              width: 48,
              height: 48,
              decoration: BoxDecoration(
                gradient: LinearGradient(
                  begin: Alignment.topLeft,
                  end: Alignment.bottomRight,
                  colors: [
                    goldColor.withValues(alpha: 0.15),
                    goldColor.withValues(alpha: 0.05),
                  ],
                ),
                borderRadius: BorderRadius.circular(12),
                border: Border.all(
                  color: goldColor.withValues(alpha: 0.2),
                  width: 1,
                ),
              ),
              child: Icon(
                icon,
                size: 22,
                color: goldColor,
              ),
            ),
            const SizedBox(width: 12),
            Expanded(
              child: Column(
                crossAxisAlignment: CrossAxisAlignment.start,
                children: [
                  Text(
                    label,
                    style: AppTextStyles.bodySmall(context).copyWith(
                      color: colorScheme.onSurfaceVariant,
                      fontWeight: FontWeight.w500,
                    ),
                  ),
                  const SizedBox(height: 4),
                  Text(
                    accountName,
                    style: AppTextStyles.headlineSmall(context).copyWith(
                      fontWeight: FontWeight.w600,
                    ),
                  ),
                ],
              ),
            ),
            Column(
              crossAxisAlignment: CrossAxisAlignment.end,
              children: [
                Text(
                  '¥ $balance',
                  style: AppTextStyles.headlineSmall(context).copyWith(
                    fontWeight: FontWeight.w700,
                    color: colorScheme.onSurface,
                  ),
                ),
                const SizedBox(height: 4),
                Text(
                  'USDT',
                  style: AppTextStyles.bodySmall(context).copyWith(
                    color: colorScheme.onSurfaceVariant,
                  ),
                ),
              ],
            ),
          ],
        ),
      ),
    );
  }
}